Mechanism for converting motion.



W. D. MCGEE.

MECHANISM FOR CONVERTING MOTION.

APPLICATION I ILED APR. 27, 1910.

Patented Nov. 1, 1910.

attorney:

W. 'D. MoGEE. MECHANISM FOR CONVERTING MOTION.

APPLICATION TILED APR. 27, 1910.

Patented Nov. 1, 1910.

awe/Mon 5 Z/ZYZZMKa winks:

UNITED, STATES PATENT OFFICE.

WILLIAM 111 Means, or

PORTLAND, OREGON, ASSIGNOR OF ONE-HALF. TO CHARLES L.

PHILLIPS, OF THE DALLES, OREGON.

MECHANISM FOR CONVERTING MOTION.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed April 27, 1910. Serial No. 557,929.

To all whom it may concern:

Be it known that I, 'WILLIAM D. MCGEE, a citizen of the United States,residing at Portland, in'the county of Multnomah and State of Oregon,have invented a new and useful Mechanism for Converting Motion, of whichthe following is a specification.

This invention has for its object to provide an improved mechanism forconverting the reciprocating motion of an engine or other prime moverinto rotary motion, and to this end it consists in a novel combinationand arrangement of parts to be herelnafter described and claimed.

The invention is illustrated in the accompanying drawings, in which,

Figure 1 is an elevation of the mechanism, partly broken away. Fig. 2 isan elevat on of one of the parts of the reciprocating member to behereinafter described. Fig. 3 is a vertical section on the line 33 ofFig. 2. Fig. 4 is a horizontal section of the reciprocating member, andFig. 5 is an elevation of said member with one of its end walls removed.

Referring to the drawings, 1 denotes a bed on which are mounted twoopposite and axially alined working cylinders 2 of a reciprocating steamor other engine. The valve mechanism and other parts of the engine havenot been shown as they form no part of the present invention. To thepistons 3 working in the cylinders, are connected'rods 4, each pistonbeing provided with a pair of such rods, and each pair being connectedto a reciprocating element to be presently described, said element beingdesigned to impart a rotary movement to a shaft 5 mounted between thecylinders in axial alinement therewith. The shaft is mounted in suitablebearings 6 on the bed, and carries a pulley 7 for transmitting itsmotion. The shaft is formed with a double spiral groove 8 on oppositesides of the pulley. One of the reciprocating elements operates on oneside of the pulley, and the other one of said elements on the other sideof said pulley. Said elements are identical in structure, in view ofwhich a description of one will suflice for both. The casing of thereciprocating elements is in the shape of a drum com rising a rim 9, andheads 10, the latter belng fastened to the rimin any suitable manner.The rods 4 are connected to one of the heads, and in the latter arealined central openings through which the shaft 5 loosely passes. In thedrum is a partition 11 which has a central opening to let the shaft passthrough. The drum carries axles 12 located on diametrically oppositesides of the rim, on the outside thereof, on which axles are mountedrollers 13 which travel in guides 14; on the bed 1.

Mounted in the drum, on opposite sides of the partition 11, are disks 15having central openings 15 through which the shaft 5 passes. Theopenings, on the sides of the disks, contiguous to the partition, aresurrounded by outstanding annular flanges 17 seating in rabbets made inthe shaft opening of the partition. The disks are free to rotate in thedrum in one direction under certain conditions to be present-1ydescribed, they being held in position for such movement by the flanges.The disks are spaced from the inner surface of the drum heads, and onthe side opposite said heads are annular enlargements 18 having in theirperipheries diametrically opposite sockets 19 in which are pivotallymounted dogs 20, pro jecting radially in the direction of the rim 9 ofthe drum, and adapted to engage the inner surface thereof. The socketsand the portions of the dogs which seat therein, are circular to providea pivotal support for the latter. The ends of the dogs which engage therim 9 are convex, and said dogs are designed to prevent rotary movementof the disks 15 in the drum in one direction, they yielding to permit arotary movement in the opposite direction. Any tendency of the disks torotate in the first mentioned direction at once jams the dogs tightlyagainst the inner surface of the rim 9, and securely locks the disks tosaid rim. Coiled springs 21 connected at one of their ends to the disks,and at their other ends to the dogs, hold the latter normally in contactwith the mm.

In the shaft opening 15 of the disks 15 are diametrically opposite teeth22 which extend into the grooves 8 of the shaft 5, the teeth of one diskextending into one of said grooves, and the teeth of the other disk intothe other groove.

In operation, the drum is reciprocated on the shaft 5 by the piston 3through the connection of the latter with the drum. When the drum istravelingin one direction, one of the disks 15 is locked to the rim 9,and its teeth, by their engagement with one of the spiral grooves,impart a rotary movement to the shaft. At the same time, the other disk15 is rotating freely in the drum, its dogs yielding to permit thisrotary movement,

the shaft, the disks being locked instantly to the drum when thedirection of its travel is changed.

The parts constituting the mechanism are strong and durable, andarranged in compact form, so that there is no lost motion whatever. Endthrust on the shaft-5 is entirely eliminated by the movement of thepistons toward and from each other.

What is claimed is:

1. The combination with a shaft having a double oppositely wound spiralgroove, of a reciprocating casing through which the shaft passes,'saidcasing having a partition provided with a shaft opening, the walls ofthe shaft opening of the partition being rab beted, a pair of tootheddisks rotatably mounted in the casing on opposite sides of thepartition, said disks having openings through which the shaft passes,and annular flanges surrounding the openings, said flanges extendinginto the aforesaid rabbets,

the teeth of one disk extending into one of the shaft grooves, and theteeth of the other disk extending into'the other shaft groove, and meansfor alternately locking the disks to the casing, said means yielding topermit rotary movement of the disks in one direction.

2. The combination with a shaft having a double oppositely wound spiralgroove, of a reciprocating drum through which the shaft passes, saiddrum having a partition provided with an openingthrough which the shaftpasses, disks mounted on opposite sides of the partition, said diskshaving shaft openings, and teeth in said openings entering the groovesof the shaft, the teeth of one disk entering one of said grooves, and

the teeth of the other disk entering the other groove, said disks beingspaced from the tion opposite saidheads, the periphery of said raisedportion having sockets,and dogs pivotally mounted in said socket, andextending into engagement with the inner surheads of the drum, andhaving a raised porface of the rim of the drum for locking the disks tosaid rim, said dogs yielding to permit rotary movementof the disks inone di-' rection. A V

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

WILLIAM D. MoGEE, V

Witnesses:

J. V. PEAROY, L. LACHMAN.

